Air conditioner



FIG. 1 is a front top perspective view of an air conditioner showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof, the opposite side being the mirror image thereof;

FIG. 4 is a right side elevational view thereof, the opposite side being the mirror image thereof; and,

FIG. 5 is a front top perspective view thereof in a state of the wind direction plates opened.

The rear of the design is flat and unornamented. 

The ornamental design for an air conditioner, as shown and described. 